From 9c7867e6dc75ee8842b4bbfdfeba9e3ccf3bc616 Mon Sep 17 00:00:00 2001
From: Remy Sharp <remy@remysharp.com>
Date: Wed, 8 Feb 2017 16:52:43 +0000
Subject: [PATCH] fix: when first prop is a string lookup

---
 lib/undefsafe.js       | 5 ++++-
 test/undefsafe.test.js | 7 +++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/undefsafe.js b/lib/undefsafe.js
index f3701de..07b91d9 100644
--- a/lib/undefsafe.js
+++ b/lib/undefsafe.js
@@ -18,7 +18,10 @@ function undefsafe(obj, path, value) {
           i++;
           c = path.substr(i, 1);
         }
-        res.push(key);
+
+        if (key) { // the first value could be a string
+          res.push(key);
+        }
         key = '';
         continue;
       }
diff --git a/test/undefsafe.test.js b/test/undefsafe.test.js
index 9bd973f..c5b6470 100644
--- a/test/undefsafe.test.js
+++ b/test/undefsafe.test.js
@@ -66,6 +66,13 @@ test('should find properties with periods in them', function (t) {
   r = undefsafe(value, `a['one.two.and\three'].1`);
   t.equal(r, true, 'combo: ' + r);
 
+  value = {
+    'one.two': true
+  };
+
+  r = undefsafe(value, `['one.two']`);
+  t.equal(r, true, 'root: ' + r);
+
   t.end();
 });